Cash on delivery.
Secret protection: This dexterous ring can be the key to your cell phone or even your door. No need to charge and waterproof.
Control your smartphone: This smartphone can automatically initiate your mobile tasks, whether single or multiple. (calls, music, settings, applications, etc.)
Health Module: Eliminate infrared and adjust body functions through FIR Energy Stone and volcanic magnets.
Share and transfer information: (Send a private message/image/business card/website link to the person you want to share via a simple touch)